heads or tails

基本解释

He rolls four heads or four tails during his turn
轮到他时，掷出四个正面或反面
Most people cannot make heads or tails of this map.
大多数的人不能明白这份地图。
Moreover, the explanatory prose is haphazard (and not infrequently wrong or incoherent -- for example, I cannot make heads or tails of the lead-in to the very first example, prime.py).
此外，解释性叙述是随意的（并且经常出错或语无伦次 — 例如，我找不到第一个示例 — prime.py — 的介绍的开头或结尾）。

Here to help us make heads or tails of it all is NPR's economics correspondent and friend of the BPP, Adam Davidson.
NPR: How Will Our Next President Fix the Economy?
Will the coin toss result in heads or tails?
FORBES: Magazine Article
It's tough to make heads or tails of Holly's report, especially since he follows the assertion that HTC is "considering" such a phone with a claim that it'll be announced within the next two weeks.
ENGADGET: blogger-avatar